Another excellent documentary video (and this one may have already been posted before here at Rome.Ro) is
THIS one.
It follows Imagic as they create the Atari 2600 video game "Atlantis." Has some really cool stuff in it. I understand it doesn't have anything to do with the ZX Spectrum or Commodore, but I just thought I'd share that one as well since both videos are set in the 80's. Funny thing is, both videos begin with the same music! I wonder if it's part of the same TV program?
Thank you for sharing that video with us also, Sector. Hadn't seen that one before! I always absolutely love seeing videos of gaming in the past, especially when it follows the development of those games.